Home / 15,327.90-21,152.64-8,613.61

Finding the Fourth Proportional to 15,327.90, 21,152.64 and 8,613.61

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Solution

The fourth proportional to 15,327.90, 21,152.64 and 8,613.61 is: 11,886.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,327.90 : 21,152.64 = 8,613.61 : x
  2. Step 2: Convert to fraction form
    15,327.90/21,152.64 = 8,613.61/x
  3. Step 3: Cross multiply
    15,327.90x = 21,152.64 × 8,613.61
  4. Step 4: Simplify right side
    15,327.90x = 182,200,570.85
  5. Step 5: Solve for x
    x = 182,200,570.85/15,327.90
  6. Step 6: Final answer
    x = 11,886.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.